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https://issues.apache.org/jira/browse/HIVE-13094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16234326#comment-16234326
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Julian Hyde commented on HIVE-13094:
------------------------------------
[~jcamachorodriguez], Did this ever get ported to Calcite? Looks as if
CALCITE-1502 is similar.
> CBO: Assertion error in Case expression
> ----------------------------------------
>
> Key: HIVE-13094
> URL: https://issues.apache.org/jira/browse/HIVE-13094
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Gopal V
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Fix For: 2.1.0
>
> Attachments: HIVE-13094.01.patch, HIVE-13094.patch
>
>
> Triggered by a trap case in the case evaluation
> {code}
> CASE WHEN (-2) >= 0 THEN SUBSTRING(str0, 1,CAST((-2) AS INT)) ELSE NULL
> {code}
> {code}
> Exception in thread "b367ad08-d900-4672-8e75-a4e90a52141b
> b367ad08-d900-4672-8e75-a4e90a52141b main" java.lang.AssertionError: Internal
> error: Cannot add expression of different type to set:
> set type is RecordType(VARCHAR(2147483647) CHARACTER SET "ISO-8859-1" COLLATE
> "ISO-8859-1$en_US$primary" $f0, VARCHAR(2147483647) CHARACTER SET
> "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" $f1, VARCL
> expression type is RecordType(VARCHAR(2147483647) CHARACTER SET "ISO-8859-1"
> COLLATE "ISO-8859-1$en_US$primary" $f0, VARCHAR(2147483647) CHARACTER SET
> "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" $fL
> set is
> rel#12408:HiveProject.HIVE.[](input=HepRelVertex#12407,$f0=$0,$f1=$6,$f2=CASE(>=(-(2),
> 0), substring($6, 1, -(2)), null))
> expression is HiveProject#12414
> at org.apache.calcite.util.Util.newInternal(Util.java:774)
> at
> org.apache.calcite.plan.RelOptUtil.verifyTypeEquivalence(RelOptUtil.java:317)
> at
> org.apache.calcite.plan.hep.HepRuleCall.transformTo(HepRuleCall.java:57)
> at
> org.apache.calcite.plan.RelOptRuleCall.transformTo(RelOptRuleCall.java:224)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveReduceExpressionsRule$ProjectReduceExpressionsRule.onMatch(HiveReduceExpressionsRule.java:208)
> at
> org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:318)
> at
> org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:514)
> at
> org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:392)
> at
> org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:285)
> at
> org.apache.calcite.plan.hep.HepInstruction$RuleCollection.execute(HepInstruction.java:72)
> at
> org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:207)
> at
> org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:194)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.hepPlan(CalcitePlanner.java:1265)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.applyPreJoinOrderingTransforms(CalcitePlanner.java:1125)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:938)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:878)
> at org.apache.calcite.tools.Frameworks$1.apply(Frameworks.java:113)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.perform(CalcitePrepareImpl.java:969)
> {code}
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